After finally arriving at the fossil area, one must spend hours digging into the shale and clay area, under the huge rock table under which these layers lie. Large boulders from this overlying rock table, crack off from time to time and fall onto the area where one must dig for the Archaeocidaris sea urchin fossils. To find the fossils, one must detect the edges of spines along the fossil shale layers. Then dig into the area above, about a foot or more and gradually come down to the fossil layer, taking care not to cause the fossil layer to break up and destroy the Archaeocidaris sea urchin fossils in the meantime. It may take hours of work to recover just a few of these lovely fossils and then some may be too broken to repair. Also in packing these fossils out, they may be destroyed as they are very fragile.